FAQs about EAc1 :

Our building includes a large laboratory space. Can our project benchmark under the Labs21 program?

We have an international project and the space type is eligible for an Energy Star rating. Can we pursue Case 1 to demonstrate compliance given the recently released alternative compliance paths for international projects?

We have a number of buildings on a single campus that we would like to certify at the same time. Is it possible to benchmark the buildings at the campus level?

I have a mixed-use building and am wondering if it is possible to pursue the prerequisite through Case 1. How do we proceed?

We have a building that consists of two attached structures and it’s unclear if we have to consider it a single building or if it should be certified as two separate buildings and benchmarked accordingly. How should we proceed?

How long is an Energy Star label valid to use with a streamlined approach for Case 1?

Our building includes heavy process loads that significantly increase the overall energy use in the building. If we submeter these loads, can we exclude this energy use for benchmarking purposes?

We have installed submeters on our building but the utility bill includes energy use from several other buildings located on the same campus. How do we reconcile this during the LEED review process?

When is it possible to exclude up to 10% of the building from EAp2?

What do I do if the number of building occupants, operating hours, or vacant space changes during the performance period?

If you pursue the streamlined path for an Energy Star label, should the performance period for EAc6 match the 12-month time frame of the label?

How do I account for computers with multiple monitors on Portfolio Manager?

How should I treat vacant space on Portfolio Manager?

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Forum discussion

EBOM-2009 EAc1:Optimize Energy Performance

Query for Minimum Energy Performance

Our project is a Mall Building wherein the Owner of the Mall is trying for certification. There are 100's of retailers occupying the building. As per the preliminary review, we have been asked to use Option 2, Case-2 calculator. In this there are 2 further options which seems possible – · Option 2B - comparing with historic data of the same building · & Option 2C – comparing building energy data with other similar building. The power supply in Mall building is such that each retailer gets an individual bill from the supply company. Summation of all retailer bills along with the Mall common area energy consumption will give total energy consumption of the building. However the project is facing a typical challenge in collecting historical bills, particularly from all the retailers who occupy the building. Energy Bills for the Mall common area along with energy figures of all the retailers is available with the project team. We have collated energy data of the entire building backed by samples of retailer bills for current performance period. Also Historic energy consumption is available. However historic energy bills of last 3-years of large number of retailer who occupy the building is not available. Thus in such cases, is there any exempt available in documentation particularly submitting bills of the retailers. Also is there an exemption from submitting Historical Bills for last 3-years of retailers? Even using Option 2C will have same issues. Is Option 2C calculator without energy bills from the comparative buildings accepted? Documents requirement in template is unclear where it is mentioned that energy bills of atleast 3-months of current performance period is required. But there is no mention of historic bill requirement.

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Thu, 11/07/2013 - 22:11

Hi Manasi I'm sorry for your struggle with this prerequisite. Unfortunately, it was designed more-so for office buildings, and therefore it is often difficult or tedious to achieve for different building types, including malls. Based on your description, it sounds like you will not be able to use Option 2B (historical) to meet the prerequisite. However, I'd look into using Option 2C (comparable building) for your project. I'd look for bills from a building with similar function and in a similar climate as yours, normalized for things like square footage or number of retailers. Because this prerequisite requires documentation of all energy used in the building, projects that have individual meters often face the issue you're describing. As an alternative, you could install a master meter that meters the entire building's energy use, wait 12 months, and then reapply for certification using this data. Hope this helps Hannah

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